Impeller dynamic balance detection and cutting device

Abstract

The utility model relates to impeller dynamic balance technical field discloses a kind of impeller dynamic balance detection and cutting device, including base, detection assembly, cutting assembly and the mechanical claw for clamping impeller are equipped on base;Detection assembly includes detection frame and cylinder, cylinder is fixed on base and telescopic direction is vertical, output end is fixed with object table, object table surface is fixed with centering axle, detection frame is fixed to base by support leg, inner hole is coaxial with centering axle, detection frame inner peripheral surface is equipped with air hole, the airflow of flowing through air hole drives the rotation of impeller on object table.The utility model in, cylinder drives object table and centering axle synchronous lifting design, while avoiding mechanical claw to transfer impeller and detection frame to occur collision damage, can make detection frame and impeller between keep smaller gap, avoid airflow diffusion to cause driving force loss, let airflow form uniform and continuous rotation driving force.

Description

Technical Field

[0001] This utility model relates to the field of impeller dynamic balancing technology, and in particular to an impeller dynamic balancing detection and cutting device. Background Technology

[0002] The turbocharger impeller is a core component of the automotive turbine system. Its dynamic balancing and cutting are key processes, and the industry urgently needs efficient and precise automated equipment.

[0003] The existing equipment has significant shortcomings: Firstly, to ensure the effectiveness of the air blowing test, the gap between the test frame and the impeller is small, while the platform is mostly a fixed structure. When the mechanical claw grasps and moves the outer circumference of the impeller, it is prone to collision with the test frame, which can easily cause damage to the components. Secondly, the feeding, testing, and cutting processes rely on manual coordination, resulting in high labor costs, low automation, and difficulty in matching large-scale production. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides an impeller dynamic balancing detection and cutting device, which aims to improve the problem that the platform is mostly a fixed structure, which makes it easy for mechanical parts to collide with the detection platform.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: an impeller dynamic balancing detection and cutting device, comprising a base, wherein a detection component, a cutting component, and a mechanical claw for clamping the impeller are provided on the base; the detection component comprises a detection frame and a cylinder, wherein the cylinder is fixed on the base and its extension and retraction direction is vertical, a platform is fixedly connected to the output end of the cylinder, a centering shaft is fixed on the upper surface of the platform, the detection frame is fixed on the base by support legs, the inner hole of the detection frame is coaxial with the centering shaft, and an air hole is opened on the inner circumferential surface of the detection frame, wherein the airflow flowing through the air hole drives the impeller on the platform to rotate.

[0006] Preferably, the detection assembly further includes a gas distribution unit, an air pipe, and an air passage; the gas distribution unit is fixed on the base and connected to a gas source, and the detection frame has three air passages inside, one end of the air passage is connected to the air outlet of the gas distribution unit through an air pipe, and the other end of the air passage is provided with an air hole, which is evenly distributed along the circumference of the detection frame.

[0007] Preferably, the detection assembly further includes a vibration sensor and a photoelectric sensor; vibration sensors are installed on both the upper and lower surfaces of the detection frame, with the vibration sensor on the upper surface facing horizontally toward the upper plane of the impeller and the vibration sensor on the lower surface facing horizontally toward the lower plane of the impeller; the photoelectric sensor is installed on the top surface of the detection frame and faces the impeller.

[0008] Preferably, the cutting assembly includes a fixing unit and a cutting unit.

[0009] Preferably, the fixing unit includes a first support frame, a servo motor, a bearing, a platform, a centering shaft, and a photoelectric sensor; the first support frame is fixed to the base, the servo motor is fixed to the first support frame, and the output end of the servo motor passes through a hole in the first support frame and is connected to a shaft at the bottom of the platform via a coupling; the bearing is disposed between the first support frame and the platform, the centering shaft is fixed to the upper surface of the platform, and the photoelectric sensor is mounted on the upper surface of the first support frame and faces the impeller on the platform.

[0010] Preferably, the fixing unit further includes a cylinder and a cover; the cylinder is fixed on the base and its extension and retraction direction is vertical, the output end of the cylinder is fixedly connected to a connecting plate, the cover is fixedly connected to the connecting plate, and the cover has an opening on the side facing the cutting unit.

[0011] Preferably, the fixing unit further includes a top rod; the top rod is fixed to the lower surface of the connecting plate and located directly above the centering shaft.

[0012] Preferably, the fixing unit further includes a suction fan, a hose, and a waste collection box; the waste collection box is placed on the base, the suction fan is located on the side of the cover, the suction port of the suction fan is connected to the inside of the cover, and the air outlet is connected to the waste collection box through the hose.

[0013] Preferably, the cutting unit includes a second support frame, a slider, a groove, a connecting rod, and a horizontal movement drive component; the second support frame is fixed to the base and located on one side of the fixed unit; the second support frame has a groove on the side facing the fixed unit, the slider is slidably embedded in the groove, the top end of the slider is fixedly connected to the connecting rod, the horizontal movement drive component is fixed to the second support frame, the horizontal movement drive component includes a moving block, one end of the connecting rod is fixedly connected to the moving block, the other end of the connecting rod is provided with a rotary motor, and the output shaft of the rotary motor is provided with a milling cutter.

[0014] Preferably, the cutting unit further includes a lifting drive component, and the end of the connecting rod away from the slider is fixedly connected to the lifting drive component; the lifting drive component includes a slide, and the rotary motor is mounted on the slide.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, the cylinder-driven stage and the centering shaft are raised and lowered synchronously. This design avoids collision damage between the mechanical claw and the testing frame when the impeller is transferred. It also maintains a small gap between the testing frame and the impeller, preventing airflow diffusion and loss of driving force. This allows the airflow to form a uniform and continuous rotational driving force, ensuring that the impeller is always in a stable and uniform rotational state, providing a precise and reliable testing basis for dynamic balance testing.

[0017] 2. The control center in the cutting assembly can accurately calculate the appropriate cutting depth and radius based on the detected impeller imbalance, material density, and impeller specifications. This ensures precise removal of material during cutting, efficiently correcting impeller dynamic balance deviations while avoiding excessive cutting that could affect the impeller's structural integrity. By adjusting the horizontal and vertical directions of the milling cutter in the cutting unit, the cutting radius and depth can be flexibly adjusted to specifically remove excess mass from unbalanced parts of the impeller. This allows the impeller to maintain good dynamic balance during high-speed rotation, ensuring its operational stability.

[0018] 3. The suction fan, hose, and waste collection box can collect the waste generated during cutting. The enclosed space formed by the casing can concentrate the waste inside the casing, making it easy for the suction fan to efficiently capture the waste. This prevents the waste from accumulating inside the casing or adhering to the impeller and device surface, reducing the difficulty of cleaning the equipment and improving the overall cleanliness and efficiency of the operation.

[0019] 4. The gas distribution unit can stabilize and divide the airflow to ensure that the output airflow pressure is stable and uniform. The three air holes on the inner circumference of the test frame are evenly distributed in the circumference. When the airflow ejected from the air holes acts on the impeller surface, it can form a uniform driving force to drive the impeller to rotate smoothly and at a constant speed. This avoids impeller rotation swaying or speed fluctuation caused by uneven airflow distribution, thereby ensuring that the vibration sensor can collect stable and accurate vibration data and improve the reliability of the dynamic balance test results.

[0020] 5. The overall device solves the pain points of existing equipment, such as low automation and reliance on manual connection of feeding, inspection and cutting. Through the coordinated operation of feeding belt, discharge belt, defective product belt, mechanical claw, inspection components, cutting components and control center, it realizes full automation of the process from impeller feeding, dynamic balance inspection, precision cutting to qualified sorting and defective product collection. It greatly reduces manual intervention, which not only reduces labor costs and human operation errors, but also significantly improves operation efficiency and product consistency, and can fully adapt to the needs of large-scale production. Attached Figure Description

[0021] Figure 1 This is an overall view of the present utility model;

[0022] Figure 2 This is a first-person view of the detection component;

[0023] Figure 3 This is a second-view image of the detection component;

[0024] Figure 4 This is a schematic diagram of the testing frame, vibration sensor, and air vent structure.

[0025] Figure 5A schematic diagram showing the stage and centering shaft in the raised state;

[0026] Figure 6 A schematic diagram showing the stage and centering shaft in their lowering state;

[0027] Figure 7 This is a schematic diagram of the airway structure;

[0028] Figure 8 This is a schematic diagram of the cutting assembly structure;

[0029] Figure 9 This is a schematic diagram of the cutting unit structure;

[0030] Figure 10 This is a schematic diagram of the slider and slide rail structure;

[0031] Figure 11 This is a schematic diagram of the casing's descent state within the fixed unit.

[0032] Figure 12 This is a schematic diagram showing the raised state of the casing in the fixed unit.

[0033] Figure 13 This is a schematic diagram of the push rod and centering shaft structure;

[0034] Figure 14 This is a schematic diagram of the centering shaft and the stage structure.

[0035] Legend:

[0036] 1. Base; 2. Defective product conveyor belt; 3. Feeding belt; 4. Discharge belt; 5. Mechanical gripper; 6. Material sensor; 7. Fixing unit; 7-1. Housing; 7-2. Servo motor; 7-3. Connecting plate; 7-4. Waste collection box; 7-5. Hose; 7-6. Suction fan; 7-7. First support frame; 7-8. Top rod; 7-9. Bearing; 7-10. Storage platform; 8. Detection assembly; 8-1. Detection frame; 8-2. Vibration sensor; 8-3. Optical... 8-4. Electrical sensor; 8-5. Cylinder; 8-6. Air pipe; 8-7. Gas distribution unit; 8-8. Air port; 8-9. Stage; 8-10. Centering shaft; 8-10. Air passage; 9. Cutting unit; 9-1. Connecting rod; 9-2. Milling cutter; 9-3. Second support frame; 9-4. Slider; 9-5. Lifting drive component; 9-6. Slide groove; 9-7. Slide seat; 9-8. Rotary motor; 9-9. Horizontal movement drive component; 9-10. Moving block. Detailed Implementation

[0037] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0038] Example 1:

[0039] Reference Figures 1-7 An impeller dynamic balancing detection and cutting device includes a base 1, a defective product belt 2, a feeding belt 3, a discharge belt 4, a detection component 8, a cutting component, and a mechanical claw 5 for clamping the impeller. These core components have clearly defined functions and together constitute a complete automated operation process from impeller feeding to detection, cutting, qualified sorting and defective product collection, which greatly reduces manual intervention and improves the overall operating efficiency and operational stability of the equipment. The detection assembly 8 includes a detection frame 8-1 and a cylinder 8-4. The cylinder 8-4 is fixed to the base 1 and its extension and retraction direction is vertical. A stage 8-8 is fixed to the output end of the cylinder 8-4. A centering shaft 8-9 is fixed to the upper surface of the stage 8-8. The cylinder 8-4 can drive the stage 8-8 to move the centering shaft 8-9 up and down synchronously. After the impeller is placed, the stage 8-8 descends to accurately position the impeller at the detection station. The detection frame 8-1 is fixed to the base 1 by support legs. The inner hole of the detection frame 8-1 is coaxial with the centering shaft 8-9. This coaxial design can ensure the stability of the impeller rotation driven by the airflow and avoid the impeller's eccentric rotation from affecting the detection results. The inner circumferential surface of the inspection frame 8-1 is provided with air holes 8-7. The airflow flowing through the air holes 8-7 forms a continuous and uniform driving force, which can drive the impeller on the platform 8-8, which is sleeved on the centering shaft 8-9, to rotate at a uniform speed. A small gap is maintained between the inspection frame 8-1 and the impeller to enhance the effect of the airflow driving force and avoid insufficient driving force due to airflow diffusion. The design of the cylinder 8-4 driving the platform 8-8 and the centering shaft 8-9 to rise and fall can be adapted to the side gripping method of the mechanical claw 5. When the mechanical claw 5 carries the impeller close to the inspection frame 8-1, the platform 8-8 rises to provide sufficient placement space and avoid the mechanical claw from colliding with the inspection frame 8-1. The mechanical claw 5 is used to grip the impeller to be inspected on the feed belt 3 and transfer the impeller to the platform 8-8 of the inspection assembly 8, so that the impeller is sleeved on the centering shaft 8-9. The cutting assembly is used to perform dynamic balancing cutting on impellers that fail the inspection by the detection assembly 8. The discharge belt 4 is used to transport impellers that pass the inspection, and the defective product belt 2 is used to place impellers that still fail after two cutting operations. The two-cutting judgment mechanism can not only save repairable impellers to the greatest extent and reduce material waste, but also collect impellers that still fail after multiple cutting operations through the defective product belt 2, which is convenient for subsequent analysis of the impeller imbalance to optimize the production process.

[0040] The detection assembly 8 also includes a gas distribution unit 8-6, a gas pipe 8-5, and a gas passage 8-10. The gas distribution unit 8-6 is fixed on the base 1 and connected to the gas source. The gas distribution unit 8-6 can stabilize and distribute the gas output from the gas source to ensure stable airflow pressure and uniform output, avoiding abnormal impeller speed due to gas pressure fluctuations. The detection frame 8-1 has three gas passages 8-10 inside. One end of the gas passage 8-10 is connected to the outlet of the gas distribution unit 8-6 through the gas pipe 8-5. The other end of the gas passage 8-10 has a gas hole 8-7, which runs along the detection frame. The air passages 8-1 are evenly distributed around the circumference and all face the tangential direction of the impeller rotation. The three air passages 8-10 correspond one-to-one with the three air holes 8-7, so that the airflow can be blown out synchronously from the three evenly distributed positions around the impeller, forming a balanced rotational driving force, which further ensures the stability and uniformity of the impeller rotation. The internal air passages 8-10 of the test frame 8-1 are made by split casting. The test frame is first designed as a symmetrical two-half structure. Half-groove air passages are processed on the mating surfaces of the two halves. After splicing, a complete air passage is formed. Then, sealant is applied to the mating surfaces to fasten the splicing or welding to ensure the sealing performance of the air passage.

[0041] The detection assembly 8 also includes a vibration sensor 8-2 and a photoelectric sensor 8-3. Vibration sensors 8-2 are installed on both the upper and lower surfaces of the detection frame 8-1. The vibration sensor 8-2 on the upper surface faces horizontally towards the upper plane of the impeller, and the vibration sensor 8-2 on the lower surface faces horizontally towards the lower plane of the impeller, used to capture vibration signals generated during impeller rotation in real time. The photoelectric sensor 8-3 is installed on the top surface of the detection frame 8-1 and faces the impeller, used to collect marking information on the impeller surface. The two sets of vibration sensors 8-2 can accurately capture the vibration of the upper and lower planes of the impeller respectively. The vibration sensor 8-2 is a non-contact vibration sensor, which can accurately capture the vibration of the upper and lower planes of the impeller respectively, converting the vibration signal into an electrical signal and transmitting it synchronously to the control center. The photoelectric sensor 8-3 collects the marking information on the impeller surface and converts it into an electrical signal, which is also transmitted to the control center. The control center first amplifies and filters the vibration electrical signal for preprocessing. Then, based on a pre-set "vibration-imbalance" conversion model, and considering the amplitude and frequency characteristics of the vibration signal, it completes the data conversion. The control center calculates the signals collected by the upper and lower sets of vibration sensors to accurately determine the imbalance between the upper and lower planes of the impeller. When vibration sensor 8-2 detects that the vibration has reached its maximum value, this peak moment corresponds to the point where the unbalanced mass of the impeller has rotated to the position directly opposite the sensor, which is also the node with the greatest centrifugal force and strongest vibration. It immediately sends a signal to the control center and records the corresponding time. The signal transmission is instantaneous, and the timestamp is accurate to the millisecond level, ensuring the reliability of the timing data. When photoelectric sensor 8-3 detects the reference point marked on the impeller surface, it also sends a signal. The sensor marks and records the time. This marker reference point is a preset benchmark before detection, such as manual engraving or inkjet printing. After the sensor detects the marker point, it immediately provides feedback and records the current timestamp, which is compared with the vibration peak time. The control center calculates the time difference between the two sets of signals, that is, the difference between the timestamp of the vibration peak time and the timestamp of the marker reference point detection time. Combined with the cycle time of one revolution of the impeller, which is calculated in real time by the control center based on the actual rotation speed of the impeller, the corresponding circumferential angle is calculated through the correspondence between time and angle. Finally, the specific location of the imbalance between the upper and lower planes of the impeller is accurately calculated. Based on the marker reference points of the upper and lower planes, the calculated circumferential angles are used to determine the specific circumferential direction of the unbalanced mass.

[0042] Example 2:

[0043] Reference Figures 8-14Based on Embodiment 1 or Embodiment 2, the cutting assembly includes a fixing unit 7 and a cutting unit 9. The fixing unit 7 is used to rotate, position, and fix the impeller that fails the detection by the detection assembly 8. The cutting unit 9 is used to precisely cut the impeller after it is fixed by the fixing unit 7 to remove the unbalanced mass on the impeller and achieve dynamic balance cutting of the impeller. The two work together to form a complete cutting process of "positioning-cutting". The fixing unit 7 ensures that the impeller does not move during the cutting process, and the cutting unit 9 accurately performs the operation of removing excess mass. The cooperation can effectively improve cutting efficiency, reduce the number of repeated cuttings, and ensure that the dynamic balance index of the impeller meets the standard.

[0044] The fixing unit 7 includes a first support frame 7-7, a servo motor 7-2, a bearing 7-9, a platform 7-10, a centering shaft 8-9, and a photoelectric sensor 8-3. The first support frame 7-7 is fixed to the base 1, providing a stable mounting foundation for the entire fixing unit 7 and ensuring the structural stability of the components during operation. The servo motor 7-2 is fixed to the first support frame 7-7, and the output end of the servo motor 7-2 passes through the hole in the first support frame 7-7 and is connected to the shaft at the bottom of the platform 7-10 via a coupling. The bearing 7-9 is located between the first support frame 7-7 and the platform 7-10 to bear the weight of the platform 7-10 and ensure the stability of the platform 7-10. The first support frame 7-7 rotates relative to the impeller to reduce rotational friction and improve rotational stability. The centering shaft 8-9 is fixed on the upper surface of the platform 7-10 for impeller sleeve positioning, ensuring that the impeller and the platform 7-10 are coaxial. The photoelectric sensor 8-3 is installed on the upper surface of the first support frame 7-7 and faces the impeller on the platform 7-10. It is used to collect the marked reference points on the impeller surface and, together with the servo motor 7-2, achieves precise alignment of the impeller to be cut. During the detection stage, the circumferential angle corresponding to the unbalanced position is calculated by combining the signal time difference between the vibration sensor 8-2 and the photoelectric sensor 8-3 with the impeller rotation cycle. This angle data is pre-stored in the control center. The control center uses the marked reference points collected by the photoelectric sensor 8-3 as the angle reference and sends a precise rotation control command to the servo motor 7-2 to drive the platform 7-10 to rotate the impeller synchronously until the detected unbalanced angle position is precisely aligned with the cutting position of the cutting unit 9.

[0045] The fixing unit 7 also includes a cylinder 8-4 and a cover 7-1; the cylinder 8-4 is fixed on the base 1 and its extension and retraction direction is vertical. The output end of the cylinder 8-4 is fixedly connected to a connecting plate 7-3, which plays a role in force transmission. The cover 7-1 is fixedly connected to the connecting plate 7-3, and the cover 7-1 has an opening on the side facing the cutting unit 9; the cylinder 8-4 drives the connecting plate 7-3 to move the cover 7-1 up and down. When it descends, the cover 7-1 covers the platform 7-10 to form a closed protective space to prevent debris from flying during the cutting process; when it rises, it provides sufficient space for the impeller to be picked up and put down, and the opening is specifically designed to provide an insertion channel for the milling cutter of the cutting unit 9 to avoid spatial interference during the cutting process.

[0046] The fixing unit 7 also includes a push rod 7-8; the push rod 7-8 is fixed on the lower surface of the connecting plate 7-3 and located directly above the centering shaft 8-9; when the cylinder 8-4 drives the connecting plate 7-3 to press down, the push rod 7-8 moves down synchronously and presses against the top surface of the impeller, forming an upper and lower clamping fixing structure with the platform 7-10, which can effectively counteract the cutting force generated during the cutting process and prevent the impeller from shifting or shaking, thus ensuring the accuracy of the cutting position and cutting amount from a structural perspective.

[0047] The fixed unit 7 also includes a suction fan 7-6, a hose 7-5, and a waste collection box 7-4. The suction fan 7-6 is fixed to the side wall of the housing 7-1, and the waste collection box 7-4 is placed on the base 1 for easy collection and subsequent processing of debris. The suction port of the suction fan 7-6 is connected to the interior of the housing 7-1, and the exhaust port is connected to the waste collection box 7-4 through the hose 7-5. This is used to collect debris generated during the cutting process. The suction fan 7-6 can draw the debris generated during cutting from inside the housing 7-1 and transport it to the waste collection box 7-4 through the hose 7-5. This avoids debris adhering to the surface of the device and affecting subsequent detection or cutting accuracy, and also prevents debris from scattering and contaminating the equipment and working environment. At the same time, it facilitates the centralized processing and recycling of debris.

[0048] The cutting unit 9 includes a second support frame 9-3, a slider 9-4, a groove 9-6, a connecting rod 9-1, and a horizontal movement drive component 9-9. The second support frame 9-3 is fixed to the base 1 and located on one side of the fixed unit 7, providing stable support for all components of the cutting unit 9. The second support frame 9-3 has a groove 9-6 on the side facing the fixed unit 7, and the slider 9-4 is slidably fitted into the groove 9-6. The groove 9-6 guides and limits the movement of the slider 9-4, ensuring that the slider 9-4 moves smoothly only in the horizontal direction. The connecting rod 9-1 is fixed to the top of the slider 9-4. The horizontal movement drive component 9-9 is fixed to the second support frame 9-3 and includes a moving block 9-10. The screw and motor drive the screw to rotate in both directions. The moving block 9-10 is threaded with the screw, and one end of the connecting rod 9-1 is fixedly connected to the moving block 9-10. The moving block 9-10 drives the connecting rod 9-1 to move smoothly horizontally along the screw axis. The other end of the connecting rod 9-1 is equipped with a rotary motor 9-8. The output shaft of the rotary motor 9-8 is equipped with a milling cutter 9-2, which provides high-speed rotational cutting power to the milling cutter 9-2. When the horizontal movement drive component 9-9 is working, the connecting rod 9-1 drives the rotary motor 9-8 to move horizontally synchronously with the slider 9-4, realizing the distance adjustment of the milling cutter 9-2 to move closer to or further away from the fixed unit 7, and accurately adapting to the horizontal alignment requirements of the impeller cutting position.

[0049] The cutting unit 9 also includes a lifting drive component 9-5. The end of the connecting rod 9-1 furthest from the slider 9-4 is fixedly connected to the lifting drive component 9-5, enabling the horizontal feed motion and the vertical lifting motion to be linked, thus flexibly positioning the milling cutter 9-2. The lifting drive component 9-5 includes a slide 9-7, a lead screw, a frame, and a drive motor. The drive motor drives the lead screw to rotate. The slide 9-7 is threaded with the lead screw and has a raised rib. The frame has a groove that matches the raised rib. When the drive motor drives the lead screw to rotate in both directions... During operation, the slide 9-7 moves smoothly vertically up and down along the lead screw axis. The cooperation of the convex strip and the groove guides and limits the vertical movement of the slide 9-7. The rotary motor 9-8 is mounted on the slide 9-7. The lifting and lowering movement of the slide 9-7 directly drives the rotary motor 9-8 and the milling cutter 9-2 to move up and down synchronously, precisely adjusting the vertical height of the milling cutter 9-2 to adapt to the cutting requirements of the upper and lower planes of the impeller and different height positions. Combined with the horizontal feed adjustment, the milling cutter 9-2 can accurately align with the unbalanced parts detected. The control center calculates the unbalance of the upper and lower planes of the impeller based on the detection stage, and combines it with the impeller material density. By using the relationship between the unbalance and the product of the mass to be removed and the eccentricity, the cutting mass to be removed is determined, and the volume to be cut is derived based on the density. Subsequently, based on the impeller specifications and the pre-set cutting radius, the corresponding area and depth to be cut are further calculated using the relationship between volume, cutting radius, and cutting depth. The control center transmits the calculated cutting depth, area, and corresponding position signals of the upper and lower planes to the lifting drive component 9-5 and the cylinder 8-4, respectively. The cutting depth signal is transmitted to the lifting drive component 9-5, and the horizontal feed positioning signal is transmitted to the cylinder 8-4. The lifting drive component 9-5 will precisely drive the slide 9-7 to move the milling cutter 9-2 up and down according to the cutting depth parameters transmitted by the control center, adjusting the height of the milling cutter 9-2 to match the cutting requirements of the upper and lower planes of the impeller and different layers, adapting to the cutting operations at different positions on the upper and lower planes of the impeller. The milling cutter 9-2 can extend into the cover 7-1 through the opening of the cover 7-1. The multi-component collaboration realizes the precise adjustment and efficient cutting of the milling cutter 9-2 in the horizontal and vertical directions, meeting the cutting requirements of different unbalance amounts.

[0050] Working principle: The mechanical gripper 5 grasps the impeller to be inspected on the feed belt 3. The impeller has been marked manually or by inkjet printing before inspection. It is then transferred to the inspection assembly 8, placed on the platform 8-8, and fitted onto the centering shaft 8-9. Since the inspection frame 8-1 and the impeller need to maintain a small gap to ensure the blowing effect, and the mechanical gripper 5 grasps the side of the impeller, the platform 8-8 and the centering shaft 8-9 need to be raised first by the cylinder 8-4 to facilitate the stable placement of the impeller. After the impeller is in place, the cylinder 8-4 then drives the platform 8-8 and the centering shaft 8-9 to descend, so that the upper surface of the impeller is aligned with the upper vibration sensor 8-2 and the lower surface is aligned with the lower vibration sensor 8-2. Subsequently, the gas distribution unit 8-6 is activated, and the gas is blown into the air passage 8-10 through the air pipe 8-5, and then blown out evenly through the three air holes 8-7 on the detection frame 8-1, driving the impeller to rotate at a constant speed. The vibration generated during the rotation of the impeller is captured by the vibration sensor 8-2, and at the same time, the impeller marking information collected by the photoelectric sensor 8-3 is used to calculate the position and amount of imbalance on the upper and lower planes of the impeller, and determine the subsequent cutting position and cutting amount.

[0051] If the first inspection is successful, the mechanical gripper 5 directly transfers the impeller to the discharge belt 4; if the inspection fails, the mechanical gripper 5 transfers the impeller to the cutting assembly consisting of the fixing unit 7 and the cutting unit 9, places it above the stage 7-10 and sleeves it on the centering shaft 8-9. The photoelectric sensor 8-3 identifies the position of the impeller reference point, and in conjunction with the servo motor 7-2, drives the stage 7-10 to rotate, aligning the impeller's cutting point with the milling cutter 9-2; then the connecting plate 7-3 drives the cover 7-1 to descend, which has an opening on the side facing the cutting unit 9, allowing the milling cutter 9-2 to extend in; at the same time, the push rod 7-8 on the lower surface of the connecting plate 7-3 presses down to press against the top of the impeller, thus fixing the impeller. The cutting unit 9 starts working: the horizontal movement drive component 9-9 controls the milling cutter 9-2 to move closer to or further away from the impeller, adjusting the cutting radius; the lifting drive component 9-5 adjusts the height of the milling cutter 9-2 to align with the top or bottom of the impeller to be cut, and adjusts the cutting depth; the rotary motor 9-8 on the slide 9-7 drives the milling cutter 9-2 to rotate to complete precise cutting; the cutting debris is retained in the casing 7-1 and sucked into the waste debris collection box 7-4 by the suction fan 7-6. After cutting, the connecting plate 7-3 drives the casing 7-1 to rise, and the mechanical claw 5 moves the impeller to the inspection component 8 for re-inspection: if the re-inspection is qualified, it is sent to the discharge belt 4; if it is unqualified, it is returned to the cutting component to repeat the cutting; if the re-inspection is still unqualified after the second cutting, the mechanical claw 5 moves it to the defective product belt 2.

Claims

1. A dynamic balancing and cutting device for an impeller, comprising a base (1), characterized in that: The base (1) is provided with a detection component (8), a cutting component and a mechanical claw (5) for clamping the impeller; the detection component (8) includes a detection frame (8-1) and a cylinder (8-4). The cylinder (8-4) is fixed on the base (1) and its extension and retraction direction is vertical. The output end of the cylinder (8-4) is fixed to a stage (8-8). A centering shaft (8-9) is fixed on the upper surface of the stage (8-8). The detection frame (8-1) is fixed on the base (1) by a support leg. The inner hole of the detection frame (8-1) is coaxial with the centering shaft (8-9). An air hole (8-7) is opened on the inner circumferential surface of the detection frame (8-1). The airflow flowing through the air hole (8-7) drives the impeller on the stage (8-8) to rotate.

2. The impeller dynamic balancing detection and cutting device according to claim 1, characterized in that: The detection component (8) further includes a gas distribution unit (8-6), an air pipe (8-5), and an air passage (8-10); the gas distribution unit (8-6) is fixed on the base (1) and connected to the gas source; the detection frame (8-1) has three air passages (8-10) inside; one end of the air passage (8-10) is connected to the outlet of the gas distribution unit (8-6) through the air pipe (8-5); the other end of the air passage (8-10) is provided with an air hole (8-7); the air hole (8-7) is evenly distributed along the circumference of the detection frame (8-1).

3. The impeller dynamic balancing detection and cutting device according to claim 1, characterized in that: The detection assembly (8) further includes a vibration sensor (8-2) and a photoelectric sensor (8-3); the upper and lower surfaces of the detection frame (8-1) are both equipped with vibration sensors (8-2), the vibration sensor (8-2) on the upper surface is horizontally facing the upper plane of the impeller, and the vibration sensor (8-2) on the lower surface is horizontally facing the lower plane of the impeller; the photoelectric sensor (8-3) is installed on the top surface of the detection frame (8-1) and faces the impeller.

4. The impeller dynamic balancing detection and cutting device according to claim 1, characterized in that: The cutting assembly includes a fixing unit (7) and a cutting unit (9).

5. The impeller dynamic balancing detection and cutting device according to claim 4, characterized in that: The fixing unit (7) includes a first support frame (7-7), a servo motor (7-2), a bearing (7-9), a platform (7-10), a centering shaft (8-9), and a photoelectric sensor (8-3). The first support frame (7-7) is fixed on the base (1), the servo motor (7-2) is fixed on the first support frame (7-7), and the output end of the servo motor (7-2) passes through the hole of the first support frame (7-7) and is connected to the shaft at the bottom of the platform (7-10) through a coupling. The bearing (7-9) is disposed between the first support frame (7-7) and the platform (7-10), the centering shaft (8-9) is fixed on the upper surface of the platform (7-10), and the photoelectric sensor (8-3) is installed on the upper surface of the first support frame (7-7) and faces the impeller on the platform (7-10).

6. The impeller dynamic balancing detection and cutting device according to claim 5, characterized in that: The fixing unit (7) also includes a cylinder (8-4) and a cover (7-1); the cylinder (8-4) is fixed on the base (1) and its extension and retraction direction is vertical. The output end of the cylinder (8-4) is fixedly connected to a connecting plate (7-3). The cover (7-1) is fixedly connected to the connecting plate (7-3). The cover (7-1) has an opening on the side facing the cutting unit (9).

7. The impeller dynamic balancing detection and cutting device according to claim 6, characterized in that: The fixing unit (7) also includes a top rod (7-8); the top rod (7-8) is fixed on the lower surface of the connecting plate (7-3) and located directly above the centering shaft (8-9).

8. The impeller dynamic balancing detection and cutting device according to claim 7, characterized in that: The fixing unit (7) also includes a suction fan (7-6), a hose (7-5), and a waste collection box (7-4); the waste collection box (7-4) is placed on the base (1), the suction fan (7-6) is set on the side of the cover (7-1), the suction port of the suction fan (7-6) is connected to the inside of the cover (7-1), and the air outlet is connected to the waste collection box (7-4) through the hose (7-5).

9. The impeller dynamic balancing detection and cutting device according to claim 4, characterized in that: The cutting unit (9) includes a second support frame (9-3), a slider (9-4), a groove (9-6), a connecting rod (9-1), and a horizontal movement drive component (9-9). The second support frame (9-3) is fixed on the base (1) and located on one side of the fixed unit (7). The second support frame (9-3) has a groove (9-6) on the side facing the fixed unit (7). The slider (9-4) is slidably embedded in the groove (9-6). The top of the slider (9-4) is fixedly connected to the connecting rod (9-1). The horizontal movement drive component (9-9) is fixed to the second support frame (9-3). The horizontal movement drive component (9-9) includes a moving block (9-10). One end of the connecting rod (9-1) is fixedly connected to the moving block (9-10). The other end of the connecting rod (9-1) is provided with a rotary motor (9-8). The output shaft of the rotary motor (9-8) is provided with a milling cutter (9-2).

10. The impeller dynamic balancing detection and cutting device according to claim 9, characterized in that: The cutting unit (9) further includes a lifting drive component (9-5), and the end of the connecting rod (9-1) away from the slider (9-4) is fixedly connected to the lifting drive component (9-5); the lifting drive component (9-5) includes a slide (9-7), and the rotary motor (9-8) is mounted on the slide (9-7).

Images